The only British species that has pale patches on the first tergite. Those paired pale patches continue on tergites 2 to 5 (or 8 in the female). Claws simple. Antennal segment 8 less than 3 times as long as broad.
Empria pumila larval food plant is unknown but thought to be meadowsweet.
Size: Approx. 4 - 6mm
Distribution: England, Scotland, Wales, Ireland
Flight period: May
Plant associations: Unknown, probably Filipendula ulmaria (meadowsweet)
Benson, R.B., 1952. Handbooks for the Identification of British Insects. Hymenoptera, Symphyta, Vol 6, Section 2(a-c), Royal Entomological Society, London
Liston A, Knight G, Sheppard D, Broad G, Livermore L (2014) Checklist of British and Irish Hymenoptera - Sawflies, ‘Symphyta’. Biodiversity Data Journal 2: e1168. https://doi.org/10.3897/BDJ.2.e1168